Home / 26,800.11-40,203.72-9,930.78

Finding the Fourth Proportional to 26,800.11, 40,203.72 and 9,930.78

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Solution

The fourth proportional to 26,800.11, 40,203.72 and 9,930.78 is: 14,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,800.11 : 40,203.72 = 9,930.78 : x
  2. Step 2: Convert to fraction form
    26,800.11/40,203.72 = 9,930.78/x
  3. Step 3: Cross multiply
    26,800.11x = 40,203.72 × 9,930.78
  4. Step 4: Simplify right side
    26,800.11x = 399,254,298.50
  5. Step 5: Solve for x
    x = 399,254,298.50/26,800.11
  6. Step 6: Final answer
    x = 14,897.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.